| 摘要 |
<p>A method of producing a near-infrared absorbing dye compound, useful for image forming materials, infrared heat-sensitive recording devices, optical film materials, and the like, containing a process of reacting a compound represented by formula (I) with peroxomonosulfuric acid or its salt.
<Chemistry id="chema01" num="0001"><Image id="ia01" he="60" wi="77" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" /></Chemistry>
wherein R<Sup>111</Sup>, R<Sup>112</Sup>, R<Sup>121</Sup>, R<Sup>122</Sup>, R<Sup>131</Sup>, R<Sup>132</Sup>, R<Sup>141</Sup> and R<Sup>142</Sup> each independently represent a hydrogen atom, an aliphatic group or an aromatic group; R<Sup>103</Sup>, R<Sup>113</Sup>, R<Sup>123</Sup>, R<Sup>133</Sup> and R<Sup>143</Sup> each independently represent a substituent; and n<Sub>103</Sub>, n<Sub>113</Sub>, n<Sub>123</Sub>, n<Sub>133</Sub> and n<Sub>143</Sub> each independently denote an integer from 0 to 4.</p> |
